US5370702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetabular cup having optionally removable portions
Assignee: Stelkast Inc
•
Filing: 1993-06-17
•
Granted: 1994-12-06
•
Expires: 2013-06-17
Abstract
Abstract An acetabular cup having optionally removable portions to permit a choice between methods of affixation is provided. The cup has recesses in the surface of the wall of the cup. A post extends from the base of the recess inwardly toward the interior of the cup, but does not extend past the inner surface of the wall into the interior of the cup. A very thin annular section of the wall remains at the base of the recess. To open a hole, a tool is used to grasp and pull the post. The pulling force applied to the post causes the wall at the annular section to break or tear. The base and post is removed and a hole remains through which a fastener can be inserted. The hole or recess is configured to receive a standard bone screw, but may be configured to complement the shape of the head of any desired bone fastener.
Inventors
- 👤 Scott A. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61F2/30721; A61F2/30744; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61F2/3094; A61F2002/30001; A61F2002/30316; A61F2002/30317; A61F2002/30324; A61F2002/30535; A61F2002/30561; A61F2002/30667; A61F2002/30682; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30787; A61F2002/3079; A61F2002/30795; A61F2002/30807; A61F2002/3081; A61F2002/3082; A61F2002/30822; A61F2002/30878; A61F2002/30934; A61F2002/30937; A61F2002/3401; A61F2/46; A61F2/4637; A61F2002/4641; A61F2250/00; A61F2250/0014; A61F2250/0036; A61F2310/00; A61F2310/00005; A61F2310/00011
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
54 words
An implant comprising: a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion defined by a weakened perimeter formed in said wall for defining a hole in said wall when said removable portion is removed.
Claim 2
Dependent Claim
54 words
An implant comprising: a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion defined by a weakened perimeter formed in said wall for defining a hole in said wall when said removable portion is removed.
Claim 3
Dependent Claim
18 words
The implant recited in claim 1 wherein said cup shaped member has a plurality of said removable portions.
Claim 4
Dependent Claim
112 words
An implant comprising; a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion formed in said wall for defining a hole in said wall when said removable portion is removed wherein there are a plurality of said removable portions comprising: a plurality of spaced recessed areas formed in said wall, each recessed area having a base surrounded by a weakened perimeter and means extending from said base for transferring a force sufficient for separating said base from said wall along said perimeter to define a hole in said wall through said recessed area.
Claim 5
Dependent Claim
112 words
An implant comprising; a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion formed in said wall for defining a hole in said wall when said removable portion is removed wherein there are a plurality of said removable portions comprising: a plurality of spaced recessed areas formed in said wall, each recessed area having a base surrounded by a weakened perimeter and means extending from said base for transferring a force sufficient for separating said base from said wall along said perimeter to define a hole in said wall through said recessed area.
Claim 6
Dependent Claim
81 words
An implant comprising: a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion formed in said wall for defining a hole in said wall when said removable portion is removed wherein said removable portion is defined by a weakened perimeter in said wall and includes means for transferring to said perimeter a force sufficient to separate said removable portion from said wall.
Claim 7
Dependent Claim
81 words
An implant comprising: a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion formed in said wall for defining a hole in said wall when said removable portion is removed wherein said removable portion is defined by a weakened perimeter in said wall and includes means for transferring to said perimeter a force sufficient to separate said removable portion from said wall.
Claim 8
Dependent Claim
21 words
The implant recited in claim 4 wherein said means for transferring force is a member configured for engagement with a tool.
Claim 9
Dependent Claim
12 words
The implant recited in claim 5 wherein said member is a post.
Claim 10
Dependent Claim
122 words
An implant comprising: a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion formed in said wall for defining a hole in said wall when said removable portion is removed wherein said wall has a first depth dimension and said removable portion has a perimeter defined by a second depth dimension, said second depth dimension being less than said first depth dimension and being sufficiently thin at said perimeter relative to said first depth dimension that said optionally removable portion separates from said wall at said perimeter upon the application of a breaking force sufficient to separate said removable portion from said wall.
Claim 11
Dependent Claim
122 words
An implant comprising: a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion formed in said wall for defining a hole in said wall when said removable portion is removed wherein said wall has a first depth dimension and said removable portion has a perimeter defined by a second depth dimension, said second depth dimension being less than said first depth dimension and being sufficiently thin at said perimeter relative to said first depth dimension that said optionally removable portion separates from said wall at said perimeter upon the application of a breaking force sufficient to separate said removable portion from said wall.
Claim 12
Dependent Claim
21 words
The implant recited in claim 1 wherein said removable portion is formed in said inner surface of said cup shaped member.
Claim 13
Dependent Claim
21 words
The implant recited in claim 1 wherein said removable portion is formed in said outer surface of said cup shaped member.
Claim 14
Dependent Claim
100 words
An implant comprising: a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion formed in said wall for defining a hole in said wall when said removable portion is removed wherein said removable portion is formed by opposing recessed areas in said inner and said outer surfaces, each recessed area having a base and a grooved perimeter therein sufficiently weakened to permit said base to be separated from said wall at said perimeter upon the application of a breaking force thereto.
Claim 15
Dependent Claim
100 words
An implant comprising: a cup shaped member having a wall defined by an outer surface configured for replacement of an acetabulum and by an inner surface; and at least one removable portion formed in said wall for defining a hole in said wall when said removable portion is removed wherein said removable portion is formed by opposing recessed areas in said inner and said outer surfaces, each recessed area having a base and a grooved perimeter therein sufficiently weakened to permit said base to be separated from said wall at said perimeter upon the application of a breaking force thereto.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |